BBN-Vax-TCP/stand/d2tcpy.c
# define MIN(a,b) (a<b?a:b)
# define RP6CYL 815 /* no. RP06 cylinders/pack */
# define RP6TRK 19 /* no. tracks/cyl */
# define RP6SEC 22 /* no. sectors/track */
# define RP6ST (RP6TRK*RP6SEC) /* no. sectors/cyl */
# define MAXSEC (RP6CYL*RP6TRK*RP6SEC) /* sectors/pack */
# define M0 0x20010000 /* phys addr MBA 0 */
# define M1 0x20012000 /* phys addr MBA 1 */
# define M0_cr (M0+4) /* MBA 0 control reg addr */
# define M1_cr (M1+4) /* MBA 1 control reg addr */
# define M0_map (M0+0x800) /* start MBA 0 map reg's */
# define M1_map (M1+0x800) /* start MBA 1 map reg's */
# define M0_var (M0+0xc) /* MBA 0 virt addr reg */
# define M1_var (M1+0xc) /* MBA 1 virt addr reg */
# define M0_bc (M0+0x10) /* MBA 0 byte count reg */
# define M1_bc (M1+0x10) /* MBA 1 byte count reg */
# define MBAinit 01 /* MBA init bit */
/* */
# define TM (M1+0x400) /* base for TM02/TE16 reg's */
# define RP (M0+0x400) /* base for RP06 reg's, drive 0 */
/* */
# define TM_tc (TM+0x24) /* TM02 tape control reg */
# define TM_cs1 (TM+0) /* TM02 control 1 reg */
# define TM_ds (TM+4) /* status reg */
# define TM_fc (TM+0x14) /* TM02 frame count reg */
/* */
# define RP_cr 0 /* RP06 control reg offset, longword */
# define RP_sr 1 /* RP06 status reg offset */
# define RP_stk 5 /* RP06 sector/track reg offset */
# define RP_off 011 /* RP offset reg */
# define RP_cyl 10 /* RP06 cylinder reg offset */
/* */
# define RP_GO 1 /* go bit */
# define RP_RD 070 /* RP06 read function code */
# define RP_WR 060 /* RP06 write function code */
# define RP_DC 010 /* drive clear function code */
# define RP_FMT 0x1000 /* format bit in RP offset reg */
# define RP_RIP 020 /* Read-in Preset function code */
# define RP_MOL 0x1000 /* medium online bit in status */
# define RP_DRY 0200 /* drive ready, status reg */
# define RP_ERR 040000 /* composite error, status reg */
/* */
# define TM_GO 1 /* TM02 go bit */
# define TM_DCLR 010 /* TM02 drive clear function code */
# define TM_SFWD 030 /* space forward function code */
# define TM_WRTF 060 /* write forward function code */
# define TM_REDF 070 /* read forward function code */
# define TM_RWND 06 /* TM02 Rewind */
# define TM_WEOF 026 /* write end of file function */
# define TCHAR 01300 /* TM02/TE16 drive 0 ,800 BPI,PDP11,etc. */
# define TM_DRDY 0200 /* TM02/drive ready,status reg */
# define TM_ERR 040000 /* TM02 composite error, status reg */
/* */
# define RXCS 32 /* receiver control/staus */
# define RXDB 33 /* receiver data */
# define TXCS 34 /* transmitter control/status */
# define TXDB 35 /* transmitter data */
# define RXCS_DONE 0x80 /* receiver done */
# define TXCS_RDY 0x80 /* transmitter ready */
/* */
# define BUFSIZ 5120 /* max tape block size = input buffer size */
# define MAXUNI 1
# define NL 012
# define CR 015
/* */
char input[BUFSIZ] ; /* tape input buffer */
struct { int reg ; } ;
int blksiz ,tapoff , dskoff , wsize , dblks ;
int count;
unsigned int ins , outs ;
unsigned short nread , bytoff , error ;
int *RPptr , dunit ; /* ptr to start of RP reg's for desired drive */
main() {
/*
* Stand-alone program to copy TM02/TE16 drive 0 mag tape to
* RP06 disc.
* User specifies tape block size (must be multiple of 512), tape
* offset (tape blocks), disc unit no., disc offset (512-byte
* blocks) and count of tape blocks to be transferred.
*/
int getcon() , putstr() , a2l() , l2a() ;
putlin("d2tcpy : Disk-to-Tape Copy") ;
putnl() ;
bsize :
if (putstr("tape block size : ")) goto fini ;
if (getcon(input)) goto fini ;
putnl() ;
blksiz = a2l(input) ;
if ((blksiz <= 0) || (blksiz > BUFSIZ)) goto bsize ;
if (blksiz%512) goto bsize ; /* block size must be 512 multiple */
M0_cr->reg = MBAinit ; /* MBA 0 init */
M1_cr->reg = MBAinit ; /* MBA 1 init */
TM_tc->reg = TCHAR ; /* TE16,drive 0 ,800 BPI, PDP11, odd parity,
abort on error */
TM_cs1->reg = TM_DCLR | TM_GO ; /* clear tape drive 0 */
if (terror()) goto taperr ;
toff :
if (putstr("tape offset : ")) goto fini ;
if (getcon(input)) goto fini ;
putnl() ;
tapoff = a2l(input) ;
if (tapoff < 0) goto toff ;
if (taprew()) goto taperr ;
if (tapspc(tapoff)) goto taperr ;
dun :
if (putstr("disk unit : ")) goto fini ;
if (getcon(input)) goto fini ;
putnl() ;
dunit = a2l(input) ;
if ((dunit > MAXUNI) || (dunit < 0)) goto dun ;
doff :
if (putstr("disc offset : ")) goto fini ;
if (getcon(input)) goto fini ;
putnl() ;
dskoff = a2l(input) ;
if ((dskoff < 0) || (dskoff > MAXSEC-1)) goto doff ;
gknt :
if (putstr("no. of input blocks : ")) goto fini ;
if (getcon(input)) goto fini ;
putnl() ;
count = a2l(input) ;
if (count < 0) goto gknt ;
error = 0 ;
if (init()) goto bsize ;
while ((error == 0) && (count>0)) {
if (dread()) {
putlin("disc i/o error") ;
goto ioerr ;
}
ins++ ; /* count of disk blocks input */
if (twrite()) {
taperr :
putlin("tape i/o error") ;
ioerr :
error++ ;
continue ;
}
outs =+ dblks ; /* count of tape blocks output */
count -= nread ;/* dec no. blocks read */
}
fini :
TM_cs1->reg = TM_WEOF | TM_GO;
twait();
TM_cs1->reg = TM_RWND | TM_GO;
twait();
return(0) ;
}
/* */
putstr(csp)
register char *csp ;
{
if (putcon(csp)) return(-1) ;
return(0) ;
}
/* */
putlin(sptr)
register char *sptr ;
{
if (putcon(sptr)) return(-1) ;
if (putnl()) return(-1) ;
return(0) ;
}
/* */
putnl()
{
if (putcon("\r\n")) return(-1) ;
return(0) ;
}
/* */
putcon(csp)
register char *csp ;
{
/*
* Function to output null-terminated string pointed to
* by 'csp' to the VAX LSI terminal.
*/
register c ;
c = 0 ;
while (c = (*csp++)) putc(c) ;
return(0) ;
}
/* */
putc(c)
{
/* wait for LSI printer to be ready */
while ((mfpr(TXCS) & TXCS_RDY) == 0) ;
/* output character */
mtpr(TXDB,c&0177) ;
}
/* */
getcon(cs)
register char *cs ;
{
/*
* Function to return char's from VAX LSI keyboard to
* char array 'cs' - input stops when CR or LF received -
* null char appended to end of input
*/
register int c , c2 ;
int getc() ;
inloop :
c = getc() ; /* get 1 char from terminal */
putc(c) ; /* echo char */
if ((c == NL) || (c == CR)) {
putc(CR) ;
putc(0) ;
putc(NL) ;
(*cs++) = '\0' ;
return(0) ;
}
else {
(*cs++) = c ;
goto inloop ;
}
}
/* */
getc()
{
/*
* Return char from VAX LSI terminal char buffer
*/
int mfpr() ;
/* Wait for receiver done (user entered char)
*/
while ((mfpr(RXCS) & RXCS_DONE) == 0) ;
return (mfpr(RXDB) & 0177) ; /* return char from receiver buffer */
}
/* */
mtpr(regno,value)
{
asm(" mtpr 8(ap),4(ap)") ;
}
/* */
mfpr(regno)
{
asm(" mfpr 4(ap),r0") ;
}
/* */
a2l(as)
register char *as ;
{
/*
* Convert null-terminated ascii string to binary
* and return value.
* 1st char in string :
* 0 -> octal
* x -> hex
* else decimal
*/
register value , base , sign , digit ;
digit = value = sign = 0 ;
base = 10 ; /* default base */
aloop :
if ((digit = (*as++)) == 0) return(value) ; /* null */
if (digit == '-') {
sign++ ;
goto aloop ;
}
if (digit == '0') base = 8 ; /* octal base */
else { if (digit == 'x') base = 16 ; /* hex base */
else value = (digit-060) ; /* 060 = '0' */
}
while (digit = (*as++)) {
if (digit < '0') return(0) ;
switch (base) {
case 8 : {
if (digit > '7') return(0) ;
digit -= 060 ;
break ;
}
case 10 : {
if (digit > '9') return(0) ;
digit -= 060 ;
break ;
}
case 16 : {
if (digit <= '9') {
digit -= 060 ;
break ;
}
if ((digit >= 'A') && (digit <= 'F')) {
digit = (digit - 0101 + 10) ;
break ;
}
if ((digit >= 'a') && (digit <= 'f')) {
digit = digit - 0141 + 10 ;
break ;
}
return(0) ;
break ;
}
}
value = (value * base) + digit ;
}
return (sign ? -value : value) ;
}
/* */
taprew()
{
/*
* Function to rewind TM02/TE16 drive
*/
TM_cs1->reg = TM_RWND | TM_GO ;
twait() ;
if (terror()) return(-1) ;
return(0) ;
}
/* */
tapspc(fblk)
{
/*
* Function to space forward 'fblk' blocks on TM02/TE16 drive
*/
if (fblk) {
TM_fc->reg = (-fblk) ; /* no. blocks */
TM_cs1->reg = TM_SFWD | TM_GO ; /* space forward */
twait() ;
if (terror()) return(-1) ;
}
return(0) ;
}
/* */
twait()
{
/*
* Function to wait until TM02/TE16 is not busy
*/
while ((TM_ds->reg & TM_DRDY) == 0) ;
}
/* */
terror()
{
/*
* Function to check for TM02 error
* Return (-1) if error,
* esle return (0).
*/
if (TM_ds->reg & TM_ERR) return(-1) ;
return(0) ;
}
/* */
init() {
/*
* Initialization.
* Initialize MBA 0 (disk) and MBA 1 (tape).
* Initialize TM02/TE16 for drive 0 , 800 BPI, PDP11, etc.
* Set up MBA 0 and MBA 1 map registers to map a max.
* transfer of 'BUFSIZ' bytes.
*/
register int *mp0 , *mp1 , i , page ;
nread = BUFSIZ/blksiz ; /* no. of tape reads to fill input buffer */
wsize = nread * blksiz ; /* no. bytes each write to disc */
dblks = wsize/512 ; /* no. of disc blocks on each write */
RPptr = RP + (dunit * 32 * 4) ; /* start of RP reg's for drive */
if ((*(RPptr+RP_sr) & RP_MOL) == 0) {
putlin("unit not online") ;
return(-1) ;
}
*(RPptr+RP_cr) = RP_RIP | RP_GO ; /* preset :/
*(RPptr+RP_off) = RP_FMT ; /* set format bit */
bytoff = (int)(&input[0])&0777 ; /* byte offset of buffer addr */
page = ((int)&input[0] >> 9) & 07777777 ; /* start page of buffer */
mp0 = M0_map ; /* phys addr of MBA 0 map reg base */
mp1 = M1_map ; /* " " " 1 " " */
i = (((BUFSIZ+511)>>9)&0777) + 1 ; /* max. no. of pages */
while (i--)
(*mp0++) = (*mp1++) = 0x80000000 | page++ ; /* map entry */
}
/* */
twrite()
{
/*
* Function to write TM02/TE16 tape drive, 'blksiz' bytes each
* write, and 'nread' writes.
*/
register int i, j ;
j = 0;
for (i = MIN(nread,count) ; i ; i--) {
M1_var->reg = bytoff + j++ * blksiz;
M1_bc->reg = (-blksiz) ; /* MBA 1 byte count reg */
TM_fc->reg = (-blksiz); /* tape frame counter register */
TM_cs1->reg = TM_WRTF | TM_GO ; /* write forward */
twait() ; /* wait for ready */
if (terror()) return(-1) ; /* return on error */
}
return(0) ; /* normal return */
}
/* */
dread()
{
/*
* Function to read 'wsize' bytes (512 multiple) from disc
* to buffer 'input[]".
*/
register int i , j ;
*(RPptr+RP_cr) = RP_DC | RP_GO ; /* drive clear */
*(RPptr+RP_cyl) = dskoff/RP6ST ; /* cylinder no. */
i = dskoff%RP6ST ;
j = (i/RP6SEC)<<8 ; /* track */
*(RPptr+RP_stk) = j | (i%RP6SEC) ; /* sector : track */
M0_bc->reg = (count<nread?-(count*512):(-wsize)) ; /* byte count */
M0_var->reg = bytoff ; /* virt addr reg = map no. + byte off */
*(RPptr+RP_cr) = RP_RD | RP_GO ; /* write */
dskoff =+ dblks ; /* point to next disc sector */
dwait() ; /* wait for i/o to finish */
if (derror()) return(-1) ; /* error */
return(0) ; /* normal return */
}
/* */
dwait() {
/*
* Function to wait MBA 0 RP06 disc unit to be ready.
*/
while ((*(RPptr+RP_sr)&RP_DRY) == 0) ;
}
/* */
derror()
{
/*
* Function to check for MBA 0 RP06 error.
*/
if (*(RPptr+RP_sr) & RP_ERR) return(-1) ;
return(0) ;
}
/* */
halt()
{
asm(" halt") ;
}
/* */
l2a(val,rptr)
register int val ;
register char *rptr ;
{
register int i ;
register char *tp ;
int knt ;
char tmp[20] , sign ;
knt = sign = 0 ;
if (val < 0) {
sign++ ;
val = (-val) ;
}
tp = tmp ;
loop :
knt++ ;
i = val/10 ; /* quotient & base 10 */
(*tp++) = val%10 + '0' ; /* ascii remainder */
val = i ;
if (val == 0) {
/* done dividing */
if (sign) { knt++ ; (*tp++) = '-' ; }
for (i = knt ; i ; i--)
(*rptr++) = tmp[i-1] ;
(*rptr++) = '\0' ;
return(knt) ;
}
else goto loop ;
}
/* */
echo(lngword)
register int lngword ;
{
char tmp[30] ;
l2a(lngword,tmp) ;
putlin(tmp) ;
}